component

TL4051CQDBZR

Public Made by Adom

by adom

Texas Instruments Voltage Reference, SOT-23-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentpower management (pmic)tl4051cqdbzrfactory-2.0.0extractor-text
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity
main
Download ZIP Propose a change
Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 21d ago
viewers tl4051cqdbzr: viewers · Ray 21d ago
package.json Publish 0.1.0 · Ray 21d ago
page.json tl4051cqdbzr: specified limits as data (metadata.characteristics, 30 rows from the datasheet) · Ray 17d ago
README.md tl4051cqdbzr: specified limits as data (metadata.characteristics, 30 rows from the datasheet) · Ray 17d ago
tl4051cqdbzr-etched.glb tl4051cqdbzr: factory component page (tier=lcsc) · Ray 21d ago
tl4051cqdbzr-etched.step tl4051cqdbzr: factory component page (tier=lcsc) · Ray 21d ago
tl4051cqdbzr-hero.glb tl4051cqdbzr: hero GLB from the etched model (keeps the MPN mark) · Ray 21d ago
tl4051cqdbzr-hero.overlay.json Publish 0.1.0 · Ray 21d ago
tl4051cqdbzr.glb Publish 0.1.0 · Ray 21d ago
tl4051cqdbzr.kicad_mod Publish 0.1.0 · Ray 21d ago
tl4051cqdbzr.kicad_sym Publish 0.1.0 · Ray 21d ago
tl4051cqdbzr.lbr Publish 0.1.0 · Ray 21d ago
tl4051cqdbzr.step Publish 0.1.0 · Ray 21d ago

TL4051CQDBZR

Texas Instruments · Voltage Reference · SOT-23-3

TL4051CQDBZR from Texas Instruments, in a SOT-23-3. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 FB input Feedback input of the adjustable version, connected to the external R1/R2 divider that sets VZ = VREF(1 + R2/R1), with VREF of 1.212 V typ and feedback current of 70 nA typ (130 nA max at 25°C).
2 CATHODE passive Cathode (shunt output) connected through series resistor RS to the supply, with recommended cathode current up to 12 mA, absolute maximum continuous cathode voltage 15 V, and adjustable VZ up to 10 V.
3 ANODE power_in Anode, the ground/return reference of the shunt reference.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SOT-23-3
Category Power Management (PMIC)
Pins 3

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Reverse breakdown voltage tolerance (C grade, Q, 25°C) VREF tolerance -6 6 mV IZ = 100μA, VZ = 5V, TA = 25°C 8
Reference voltage tolerance (C grade, Q, full range) VREF tolerance -12.2 12.2 mV IZ = 100μA, VZ = 5V, full range (TA = -40°C to 125°C) 8
Minimum cathode current (25°C) IZ,min 36 65 μA TA = 25°C 8
Minimum cathode current (full range) IZ,min 75 μA full range (TA = -40°C to 125°C) 8
Reference voltage change with cathode current (IZ,min < IZ < 1mA, 25°C) DVREF/DIZ 0.3 1.1 mV IZ,min < IZ < 1mA, TA = 25°C 8
Reference voltage change with cathode current (IZ,min < IZ < 1mA, full range) DVREF/DIZ 1.5 mV IZ,min < IZ < 1mA, full range 8
Reference voltage change with cathode current (1mA < IZ < 12mA, 25°C) DVREF/DIZ 0.6 6 mV 1mA < IZ < 12mA, TA = 25°C 8
Reference voltage change with cathode current (1mA < IZ < 12mA, full range) DVREF/DIZ 8 mV 1mA < IZ < 12mA, full range 8
Reference voltage change with output voltage (line regulation, 25°C) DVREF/DVKA -2.8 -1.69 mV/V IZ = 1mA, TA = 25°C 8
Reference voltage change with output voltage (line regulation, full range) DVREF/DVKA -3.5 mV/V IZ = 1mA, full range 8
Feedback current (25°C) IFB 70 130 nA TA = 25°C 8
Feedback current (full range) IFB 150 nA full range (TA = -40°C to 125°C) 8
Reference voltage temperature coefficient (IZ = 10mA) αVREF -20 20 ppm/°C IZ = 10mA, VZ = 2.5V, TA = 25°C 8
Reference voltage temperature coefficient (IZ = 1mA) αVREF -15 15 ppm/°C IZ = 1mA, VZ = 2.5V, TA = 25°C 8
Reference voltage temperature coefficient (IZ = 100μA, 25°C) αVREF -15 15 ppm/°C IZ = 100μA, VZ = 2.5V, TA = 25°C 8
Reference voltage temperature coefficient (IZ = 100μA, full range) αVREF -50 50 ppm/°C IZ = 100μA, VZ = 2.5V, full range 8
Continuous cathode voltage VZ 15 V 4
Continuous cathode current IZ -10 20 mA 4
Operating virtual junction temperature TJ 150 °C 4
Storage temperature range Tstg -65 150 °C 4
Cathode current (recommended) IZ 12 mA see electrical characteristics 4
Reverse breakdown voltage (adjustable version, recommended) VZ 10 V adjustable version 4
Operating ambient temperature (Q grade) TA -40 125 °C Q temperature grade (TL4051xQ), natural ventilation 4
Reference voltage (adjustable version) VREF 1.212 V IZ = 100μA, VZ = 5V, TA = 25°C 8
Reverse dynamic impedance (VZ = VREF) ZZ 0.3 Ω IZ = 1mA, f = 120Hz, IAC = 0.1 IZ, VZ = VREF, TA = 25°C 8
Reverse dynamic impedance (VZ = 10V) ZZ 2 Ω IZ = 1mA, f = 120Hz, IAC = 0.1 IZ, VZ = 10V, TA = 25°C 8
Wideband noise eN 20 μVRMS IZ = 100μA, VZ = VREF, 10Hz ≤ f ≤ 10kHz, TA = 25°C 8
Long-term stability 120 ppm t = 1000h, TA = 25°C ± 0.1°C, IZ = 100μA 8
Thermal hysteresis VHYST 0.3 mV/V ΔTA = -40°C to 125°C 8
Package thermal resistance, junction to ambient (DBZ) θJA 206 °C/W DBZ package, JESD 51-7 4

CAD (KiCad official)

  • Symbol: TL4051CQDBZR
  • Footprint: Package_TO_SOT_SMD:SOT-23-3
  • 3D model: SOT-23-3 (KiCad packages3D, STEP)
  • 3D model files: tl4051cqdbzr-etched.step / tl4051cqdbzr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tl4051cqdbzr.step / tl4051cqdbzr.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (33 pp, sha256 739b8ac05dcb64a5, retrieved 2026-10-11, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF